presupposition
noun
[ ˌpriːsʌpəˈzɪʃ(ə)n ]
• a thing tacitly assumed beforehand at the beginning of a line of argument or course of action.
• "both men shared certain ethical presuppositions about the universe"
Similar:
presumption,
assumption,
preconception,
preconceived idea/notion,
supposition,
hypothesis,
surmise,
speculation,
guess,
prediction,
thesis,
theory,
premise,
belief,
suspicion,
thought,
argument,
postulation,
prejudgement,
Origin:
mid 16th century: from medieval Latin praesuppositio(n- ), from the verb praesupponere (see presuppose).